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       # 2021-04-26 - Home Made Litmus Test
       
 (IMG) Red cabbage pH indicator
       
       The red cabbage extract can be used to determine whether substances
       are acidic or alkaline.  The structures of the anthocyanin pigments,
       which give the red cabbage its colour, are subtly changed at varying
       pH.  These different structures give a range of colours.
       
 (HTM) From: https://www.compoundchem.com/2017/05/18/red-cabbage/
       
       tags: article,science
       
       # Tags
       
 (DIR) article
 (DIR) science